SimplyGo Mini backpack by o2totes is designed to allow you to be hands free while wearing your simplygo unit. This backpack features, perfectly fitting backpack for your unit, a front zippered pocket for storage of keys, wallet, cell phone, etc. a side pocket for water bottles, charging cords or whatever you need to take with you. Our backpacks also have a lower zippered compartment for an extended or single battery. This backpack accommodates both the single and double battery while the unit is inside the backpack as well as the storage underneath for an extra single or double battery. All backpacks come with double padded straps, and a removable, adjustable chest strap.